Help and Support for
Samsung Galaxy S21 Ultra 5G
Choose a help topic
Charge the battery in your Samsung Galaxy S21 Ultra 5G Android 11.0
You should charge the phone battery regularly to ensure that your phone is always ready for use.
Registered in England and Wales. Company No 01471587. Registered Office: Vodafone House, The Connection, Newbury, Berkshire, RG14 2FN.
*Annual Price Increase: The monthly cost will increase each year on 1 April by £2.50 for Pay monthly plans with Airtime/Data, and £3.50 for Home Broadband plans. This doesn't affect Device Plans. More information: vodafone.co.uk/pricechanges
© 2026 Vodafone Limited is authorised and regulated by the Financial Conduct Authority for consumer credit lending and insurance distribution activity (Financial Services Register No. 712210)